Task RenameAsync(
	ObjectId id,
	string newFilename,
	CancellationToken cancellationToken = null
)

Function RenameAsync ( 
	id As ObjectId,
	newFilename As String,
	Optional cancellationToken As CancellationToken = Nothing
) As Task

abstract RenameAsync : 
        id : ObjectId * 
        newFilename : string * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _cancellationToken = defaultArg cancellationToken null
*)
-> Task